Make a global enum to differentiate impl & proxy.

ppapi/proxy/ppb_url_response_info_proxy.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/ppb_url_response_info_proxy.h"
 
 #include "ppapi/c/ppb_url_response_info.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
@@ skipping 21 matching lines @@
 
   // PPB_URLResponseInfo_API implementation.
   virtual PP_Var GetProperty(PP_URLResponseProperty property) OVERRIDE;
   virtual PP_Resource GetBodyAsFileRef() OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(URLResponseInfo);
 };
 
 URLResponseInfo::URLResponseInfo(const HostResource& resource)
-    : Resource(resource) {
+    : Resource(OBJECT_IS_PROXY, resource) {
 }
 
 URLResponseInfo::~URLResponseInfo() {
 }
 
 PPB_URLResponseInfo_API* URLResponseInfo::AsPPB_URLResponseInfo_API() {
   return this;
 }
 
 PP_Var URLResponseInfo::GetProperty(PP_URLResponseProperty property) {
@@ skipping 66 matching lines @@
     file_ref = enter.object()->GetBodyAsFileRef();
 
   // Use the FileRef proxy to serialize.
   PPB_FileRef_Proxy* file_ref_proxy = static_cast<PPB_FileRef_Proxy*>(
       dispatcher()->GetInterfaceProxy(API_ID_PPB_FILE_REF));
   file_ref_proxy->SerializeFileRef(file_ref, result);
 }
 
 }  // namespace proxy
 }  // namespace ppapi